A few days ago I brought home a new Yamaha RX-V2400 to replace my dying reciever (which I won't rant about here). I am very impressed with it, but have some questions regarding the sound processing, which is new to me since my old receiver did not have DSP. I realize that most of the DSP modes alter the original sound of the signal, but what about THX mode? I noticed that I can apply this over top of the DD(EX) or DTS(ES) decoding. Is this mode designed to be used with DVDs that are labeled as being THX mastered? On Star Wars:ATOC I thought that this was a good thing, but listening to The Matrix, I didn't care for it. Also, what is DTS Neo 6? Is it another form of ProLogic? Finally, I have found that Surround Enhanced seems to give a much nicer effect than Standard Surround. Has anyone found that it negatively affects the decoding of DD or DTS in any way? Sounds seem to be accurate in their location and sound, but the soundstage just seems much larger to me. I am feeling my way through this DSP thing, but I'm just curious about what others do.